das·tard·ly
adjective/ˈdæstədli/
/ˈdæstərdli/
(old-fashioned)- evil and cruel
邪恶残忍的 - a dastardly plot to assassinate the king
刺杀国王的卑鄙阴谋 - My first part was Captain O'Hagarty, a dastardly villain in a children's play.
我演的第一个角色是奥哈格蒂船长，一部儿童剧中的恶棍。
Oxford Collocations DictionaryDastardly is used with these nouns:- deed
Word Originmid 16th cent. (in the sense ‘dull or stupid’): from dastard in the obsolete sense ‘base coward’. - a dastardly plot to assassinate the king